When he heard the nature of my disease, he wanted me to stay three days at Tournay for him to give me fifteen pills, which would effectually cure me, and restore me to perfect health. Then he shewed me his magistrum, which he called athoeter. It was a white liquid contained in a well-stoppered phial. He told me that this liquid was the universal spirit of nature, and that if the wax on the stopper was pricked ever so lightly, the whole of the contents would disappear. I begged him to make the experiment. He gave me the phial and a pin, and I pricked the wax, and to lo! the phial was empty. "It is very fine," said I, "but what good is all this?" "I cannot tell you; that is my secret." He wanted to astonish me before I went, and asked me if I had any money about me. I took out several pieces and put them on the table. He got up, and without saying what he was going to do he took a burning coal and put it on a metal plate, and placed a twelve-sols piece with a small black grain on the coal. He then blew it, and in two minutes it seemed on fire. "Wait a moment," said the alchemist, "let it get cool;" and it cooled almost directly. "Take it; it is yours," said he. I took up the piece of money and found it had become gold. I felt perfectly certain that he had smuggled my silver piece away, and had substituted a gold piece coated with silver for it. I did not care to tell him as much, but to let him see that I was not taken in, I said,-- "It is really very wonderful, but another time you should warn me what you are going to do, so that the operation might be attentively watched, and the piece of money noted before being placed on the burning coal." "Those that are capable of entertaining doubts of my art," said the rogue, "are not worthy to speak to me." This was in his usual style of arrogance, to which I was accustomed. This was the last time I saw this celebrated and learned impostor; he died at Schlesing six or seven years after. The piece of money he gave me was pure gold, and two months after Field-marshal Keith took such a fancy to it that I gave it him. I left Tournay the next morning, and stopped at Brussels to await the answer of the letter which I had written to M. de Bragadin. Five days after I got the letter with a bill of exchange for two hundred ducats. I thought of staying in Brussels to get cured, but Daturi told me that he had heard from a rope-dancer that his father and mother and the whole family were at Brunswick, and he persuaded me to go there, assuring me that I should be carefully looked after. He had not much difficulty in getting me to go to Brunswick, as I was curious to see again the mother of my godson, so I started the same day. At Ruremonde I was so ill that I had to stop for thirty-six hours. At Wesel I wished to get rid of my post-chaise, for the horses of the country are not used to going between shafts, but what was my surprise to meet General Bekw there.